First came the stationary oxygen concentrator. Than came the portable oxygen concentrator. Now there is the Inogen One G2, the independent unit in a category all by itself. The Inogen One G2 has the ability to act as a stationary unit and a portable oxygen device, the G2 portable oxygen unit is designed to meet the changing demands of the oxygen industry. Visit our website to find out more details. My websites: The Many Uses For Portable Oxygen |